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php图片加水印类

程序员文章站 2022-05-25 13:18:41
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自己写的一个图片加水印类,暂时只支持水印图片,水印文字的还没有完善 代码不是很完善,欢迎大家交流指正! 调用方式: 先包含类文件 然后实例化类: $img = new Images; 然后提供图片: $img-imgpath(原图片路径及名称,水印图片路径及名称); 之后开始加水

自己写的一个图片加水印类,暂时只支持水印图片,水印文字的还没有完善
代码不是很完善,欢迎大家交流指正!
调用方式:
先包含类文件
然后实例化类:
$img = new Images;
然后提供图片:
$img->imgpath(原图片路径及名称,水印图片路径及名称);
之后开始加水印:
$img->send();
说明:
send( strimg filename ) 这个方法有一个函数,可以省略,在省略的情况下,保存的图片路径和名称和原来的一样,如需保存成例外的图片,就在这里提供要保存的图片路径及名称
例外,还有一个方法,show(); 这个方法用于显示加好水印的图片
这个方法可以单独调用,但必须先调用 send()方法, 也可以连续调用: $img->send()->show(); PHPizabi PostgreSQL PHPWind BLOG phpBB
imgA   = $oldimg;
		$this->imgB   = $newing;
		$this->weizhi = $WeiZhi;
	   return $this;
	 }
	 
	 public function send( $Name = '' ){
		 !empty( $Name ) or $Name = $this->imgA;
		 list($this->imgWA, $this->imgWB, $this->typea) = $this->imgread( $this->imgA );
		 list($this->imgHA, $this->imgHB, $this->typeb) = $this->imgread( $this->imgB );
		 $this->objecta = $this->openimg( $this->imgA, $this->typea );
		 $this->objectb = $this->openimg( $this->imgB, $this->typeb );
		 $this->WZ();
		 $this->start();
		 $this->over( $Name );
		 return $this;
	 }
	
	private function WZ() {
		switch( $this->weizhi ) {
			case 2:
			     $this->X = ( $this->imgWA - $this->imgHA ) / 2;
				 break;
		    case 3:
			     $this->X = ( $this->imgWA - $this->imgHA ); 
				 break;
		    case 4:
			     $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ;
				 break;
			case 5:
			     $this->X = ( $this->imgWA - $this->imgHA ) / 2;
			     $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ;
				 break;
			case 6:
			     $this->X = ( $this->imgWA - $this->imgHA );
			     $this->Y = ( $this->imgWB - $this->imgHB ) / 2 ;
			     break;
			case 7:
			     $this->Y = ( $this->imgWB - $this->imgHB );
				 break;
			case 8:
			     $this->X = ( $this->imgWA - $this->imgHA ) / 2;
				 $this->Y = ( $this->imgWB - $this->imgHB );
				 break;
			case 9:
			     $this->X = ( $this->imgWA - $this->imgHA );
				 $this->Y = ( $this->imgWB - $this->imgHB );
				 break;
			default:
			    $this->X = 0;
				$this->Y = 0;
		}
	}
	
	private function openimg( $FileName = '', $type = 0 ) {
		switch( $type ) {
			case 1:
			     $obj = imagecreatefromgif( $FileName ); break;
		    case 2:
			     $obj = imagecreatefromjpeg( $FileName ); break;
			case 3:
			     $obj = imagecreatefrompng( $FileName ); break;
			default:
			    return false;
		}
	   return $obj;
	}
	
	private function start(){
		imagecopy( $this->objecta, $this->objectb, $this->X, $this->Y, 0, 0, $this->imgHA, $this->imgHB );
	}
	
	private function over( $name = '1.jpg' ) {
		$this->okfile = $name;
		switch ( $this->typea ) {
			case 1:
			    imagegif( $this->objecta, $name );break;
			case 2:
			    imagejpeg( $this->objecta, $name );break;
			case 3:
			    imagepng( $this->objecta, $name ); break;
			default:
			   return false;
		}
	}
	
	
	
	private function imgread( $FilePath = '' ) {
		$Arr = getimagesize( $FilePath );
		return array( $Arr[0], $Arr[1], $Arr[2] );
	}
	
	
   public function show(){
	   @header('content-type:image/*');
	   echo @file_get_contents( $this->okfile );
   }
	
}